Organic light emitting device

Abstract

An organic light emitting device includes a plurality of colored pixels, and a white pixel, wherein the respective pixels include; a first electrode, a second electrode which faces the first electrode, and a light emitting member disposed between the first electrode and the second electrode, and the white pixel further includes; a first semi-transparent member disposed on the first electrode to form a microcavity with the second electrode.

1. An organic light emitting device comprising:
 a plurality of colored pixels, and a white pixel, wherein the respective pixels comprise: 
 a first electrode; 
 a second electrode which faces the first electrode; and 
 a light emitting member disposed between the first electrode and the second electrode, and 
 the white pixel further comprises: 
 a first semi-transparent member disposed on the first electrode to form a microcavity with the second electrode. 
 
     
     
       2. The organic light emitting device of  claim 1 , wherein
 the first semi-transparent member is Ag, Al or a combination of Ag and Al. 
 
     
     
       3. The organic light emitting device of  claim 1 , wherein the light emitting member comprises:
 a plurality of sub-emitting layers which emit light having different wavelengths; and 
 the light having different wavelengths are combined to emit a substantially white light. 
 
     
     
       4. The organic light emitting device of  claim 3 , wherein
 the white light has a yellowish tint. 
 
     
     
       5. The organic light emitting device of  claim 3 , wherein
 the first semi-transparent member is formed at only a portion of a region through which the white light passes. 
 
     
     
       6. The organic light emitting device of  claim 3 , wherein
 the plurality of colored pixels includes a red pixel, a green pixel, and a blue pixel, and each of the colored pixels further comprise a color filter formed below the first electrode. 
 
     
     
       7. The organic light emitting device of  claim 3 , wherein
 a pixel having the lowest emission efficiency among the plurality of colored pixels further comprises: 
 a second semi-transparent member disposed on the first electrode to form the microcavity together with the second electrode. 
 
     
     
       8. The organic light emitting device of  claim 7 , wherein
 the pixel having the lowest emission efficiency is a blue pixel. 
 
     
     
       9. The organic light emitting device of  claim 7 , wherein
 the second semi-transparent member is Ag, Al or a combination of Ag and Al. 
 
     
     
       10. The organic light emitting device of  claim 7 , wherein
 the second semi-transparent member is formed over substantially the entire region through which the white light passes. 
 
     
     
       11. The organic light emitting device of  claim 7 , wherein
 the plurality of colored pixels comprise a red pixel and a green pixel and the red pixel and the green pixel further comprise a color filter formed below the first electrode. 
 
     
     
       12. The organic light emitting device of  claim 1 , further comprising:
 a driving thin film transistor connected to the first electrode including a polycrystalline semiconductor; and 
 a switching thin film transistor connected to the driving thin film transistor including an amorphous semiconductor. 
 
     
     
       13. The organic light emitting device of  claim 12 , wherein
 the driving thin film transistor comprises; 
 a driving input electrode formed on the polycrystalline semiconductor, 
 a driving output electrode which faces the driving input electrode on the polycrystalline semiconductor, and 
 a driving control electrode formed on the driving input electrode and the driving output electrode. 
 
     
     
       14. The organic light emitting device of  claim 13 , wherein
 the switching thin film transistor comprises; 
 a switching control electrode formed below the amorphous semiconductor, 
 a switching input electrode formed on the amorphous semiconductor, and 
 a switching output electrode which faces the switching input electrode on the amorphous semiconductor and is connected to the driving control electrode.